Quadrotor model helicopter



FIG. 1 is a, top, left, front perspective view of a quadrotor model helicopter;

FIG. 2 is a bottom, right, rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a right side elevation view thereof; and,

FIG. 8 is a left side elevation view thereof.

Structural elements depicted by broken lines have been shown for the purpose of illustrating portions of the quadrotor model helicopter that form no part of the claimed design. 

CLAIM We claim the ornamental design for a quadrotor model helicopter, as shown and described. 